Double D Rotary Broach Tool
‘D’ shape rotary broach tools are all custom made as no international standard exists. For quoting purposes, Polygon requires the major diameter of the form and distance to the flat. The distance to the flat can be given as a dimension from the center to the flat, or from the flat to the opposite tangent point.
Double ‘D’ rotary broach tools are also custom made as no international standard exists. For quoting purposes, Polygon requires the major diameter of the form and distance between flats. The distance between flats is usually assumed to be on center with the diameter.
The size of forms that can be made by rotary broaching is limited by the amount of material to be removed. Usually, material removal is limited to .025” per side. This limitation keeps most ‘D’ shaped forms under 1 inch diameter.
Oversize pilot holes are required for all rotary broaching applications. The pilot hole will leave a small radius in the middle of the flat. This radius is often acceptable because sufficient contact is still made in the flat.
To request a quote on a Double D Rotary Broach fill out our online quote form or call us at 239-628-4800.